Return of Homespot Device

https://www.o2online.de/service/retoure/

it says I need to send within 14 days.. I have already crossed 14 days.. will the return still accepted ?

how to find the return number ?

You will find the “order number” or “your reference” on the top right of your delivery note. If you don't have these handy, you can also get started with your device's IMEI. You can call this up using the key combination *#06# on your device. 

Thanks.. If I send the device after 14 days.. will the return stil accepted or I will still be charged ?

It may be charged but will be refunded.

is the return or Delivery note can be found online meino2..??  

I dont see any information here in MeinO2

can you please help me on the above ?

I tried with IMEI of my Homespot router aswell and its not showing up anything.
 

Edit o2_Sven 16.06.2023/15:45: Removed personal information

Now I cant view the delivery note and also not able to login into the return portal with IMEI.. what should I do now.. I havent recieved any email regarding return of device aswell..